Relationship not working

So it's my first time being pregnant and lately I've been very withdrawn for my partner. I don't like anything effectionate from him. We do not live together anymore but planning on once our baby is born. The reason we aren't living with each other is because he had hit me a couple times. For three months we've just been going slow and seeing each other on days out. I'm not sure if I should live with him because he might do the same again. I feel like I'm no longer in love but I only started to feel like that once I found out that I'm pregnant. 
I do suffer from anxiety, depression and ptsd. And I've not been on medication so I have no idea where all these thoughts are coming from. My illnesses or the pregnancy?